Windows 10 SFC and DISM errors

First of all, I know this is a duplicate but there was no real answer to the other question Windows 10 DISM error: 0x800f081f and I'm still not allowed to comment. :/

My original problem is an annoying glitch: every time I close a file browser window (tried firefox and internet explorer) whether for saving or opening a file, the application will freeze for a few seconds. I found references to this particular issue around the internet, never a clear solution (someone solved by failing a system restore... go figure). It's around since windows 7 at least. Since the problem affects more than one application I assumed it system wide and acted accordingly.

I run

sfc /scannow

The tool detects problems but is unable to correct them so I tried with dism after some searching. I tried both

DISM /Online /Cleanup-Image /RestoreHealth

and

DISM /Online /Cleanup-Image /RestoreHealth /source:c:\10pro64\sources\Install.wim:1 /LimitAccess

with the very same results that the tool can't find a source for the files, error: 0x800f081f.

In all honesty I don't know what to do, could be a corner case. This is an upgrade to Windows 10 that occurred just a few days ago. Can't pinpoint exactly when it started, right away or after an update (which occurred almost immediately).

The funny bit is that if I manage to fix the detected problems it may not even solve the original glitch, it could be unrelated but I do want to solve this as a first step.

These are the logs for sfc and the second dism command line https://drive.google.com/file/d/0Bwn9Gr8UrRT7RVdxNUd5eHBKTDg/view?usp=sharing

dism /get-wiminfo /wimfile:c:\10pro64\sources\install.wim /english

Deployment Image Servicing and Management tool
Version: 10.0.10240.16384

Details for image : c:\10pro64\sources\install.wim

Index : 1
Name : Windows 10 Pro
Description : Windows 10 Pro
Size : 13.752.408.824 bytes

The operation completed successfully.

I looked at the log and saw that file MMAgent.psd1 from the package Microsoft-Windows-Client-Features-Package-AutoMerged-base is corrupted.

I've extracted the package into a CAB. Download it, extract the CAB and point to it as source in the DISM command

DISM /Online /Cleanup-Image /RestoreHealth /source:C:\Microsoft-Windows-Client-Features-Package-AutoMerged-base~31bf3856ad364e35~amd64~~10.0.10240.16384